Body is Brody from Chaosman with a shooped dick, face is Russell Crowe.>>574
I'm not the person who color corrected but also an "editor" (my stuff at editlux.blogspot or twitter for updates), but a lot of it is just playing around with the blending mode layers such as Overlay, Screen, etc. and seeing what works best.
Changing Hue/Saturation can be another way to get to your desired color. I usually like to desaturate slightly so it's easier to add in the colors using the blending modes.
I also like to create shadow/light to better suit the scene by copying a portion of the face that I want to be darker/lighter and putting it onto another layer. Then I play around with Level/Tone Curves and blend it into the original. Lastly you can edit the body to match closer to the face or some balance between the two as shown in the sample.
Also disclaimer I'm just an amateur so what I said may not be the most efficient way.